[22906]

After the DAC, why do you need to filter out frequencies that are inaudible anyway?
Doesn't this hurt the transient response of the DAC?

 

[MaZa]

Even though they are inaudible, they can still cause a havoc on your speakers. I mean, if you are talking about the high frequency noise filtering that is applied after DA conversion.

 

[chesebert]

residual artifacts

 

[ffrr]

http://lavryengineering.com/document...ing_Theory.pdf

http://www.lavryengineering.com/foru...ital_Audio.pdf

http://lavryengineering.com/white_papers/dither.pdf

http://lavryengineering.com/white_papers/dnf.pdf

http://lavryengineering.com/white_papers/fir.pdf

http://lavryengineering.com/white_papers/iir.pdf

http://lavryengineering.com/white_papers/sample.pdf

http://lavryengineering.com/white_papers/jitter.pdf

 

[jsplice]

Quote:

Originally Posted by ffrr /img/forum/go_quote.gif http://lavryengineering.com/document...ing_Theory.pdf http://www.lavryengineering.com/foru...ital_Audio.pdf http://lavryengineering.com/white_papers/dither.pdf http://lavryengineering.com/white_papers/dnf.pdf http://lavryengineering.com/white_papers/fir.pdf http://lavryengineering.com/white_papers/iir.pdf http://lavryengineering.com/white_papers/sample.pdf http://lavryengineering.com/white_papers/jitter.pdf

Does the name "ffrr" have any relation to "Full Frequency Range Recording"?

 

[22906]

The sampling theory one was the most relevant for me. Thanks.

 

[nikongod]

lavry is well known for HATING post-DAC filtration.

Why not post up the oppositions point, or data on how digital noise can cause an amp to hit its slew-rate limit and fuxor everything else?

anyways, to actually answer the OP's q, although it may be a misused wording:

From wikipedia:
Antialiasing means removing signal components that have a higher frequency than is able to be properly resolved by the recording (or sampling) device.

my own drivel:
antialiasing a PRE-digitization filter which stops the audio band at roughly 1/2 of the sample rate. As the audio frequency approaches the digital sample frequency the 2 can interact in "intersting" ways.
Meier actually has some good articles about it happening IN the audio band with CD sample rates. check out the analouger.

 

[ffrr]

Quote:

Originally Posted by jsplice /img/forum/go_quote.gif Does the name "ffrr" have any relation to "Full Frequency Range Recording"?

Yes, has everything to do with it. I have an on location recording business(focus on classical/acoustic music..anything that does not require sound reinforcement), and was mentored/trained in that art of recording by someone who worked for Decca for 27 years. I still dont know anything in the grand scheme, but hope to one day have my recordings be at least a fraction as good as some of those Decca releases...